4 Troubleshooting
4-2
4-2-1 No Power
4-2 Checkpoints by Error Mode
Does proper DC
A3.3V,A1.8Vappear at C126,
C156?
Check IC104, IC107 Change the
Main Ass'y
Yes
Yes
Yes
No
Check a connection a power cable.
P/N : BN39-00802A
BN39-00802B(40")
Change the Main Power Ass'y
23" : BN44-00158A
26" : BN44-00156A
32" : BN44-00156A
40" : BN44-00167A/00165A
No
Does proper DC
B9V,B3.3V_8202/B3.3VD,
B2.5V_8202 appear at
C103,C132, C145?
Check a IC809, IC802.
Change a main PCB ass'y.
Yes
No
Does proper DC 5V, 3.3V,
1.8V appear at C811, C853,
C833?
Check IC101, IC105, IC106 Change the
Main Ass'y
Yes
Does proper DC B3.3FB,
B1.2FB, B1.8VD appear at
C179_FBE, C182_FBE, C159?
Check IC110_FBE, IC111_FBE, IC109
Change the Main Ass'y
No
No
Yes
Yes
Does proper DC B3.3VD
appear at D8014?
Check IC8001
Change the Main Ass'y
No
A power is supplied to set?
Check a other function(No picture part)
Replace a LCD Panel
23" : BN07-00365A
26" : BN07-00254A
32" : BN07-00385A
40" : BN07-00387A
No
LAMP off, power indicator
LED red color?
Does proper Satand-By DC
A5V appear at C127
Does proper Main DC B12V,
B5V, B12VS appear at C104,
BD105, C119?
Does proper Inverter DC 24V
appear at CNM801 in SMPS
Summary of Contents for LN23R71BAX
Page 22: ...3 Alignments and Adjustments 3 11 Picture 4 3 W B Patten ...
Page 29: ...4 Troubleshooting 4 4 WAVEFORMS 1 2 PC Input V Sync H Sync 3 LVDS Out CLK ...
Page 31: ...4 Troubleshooting 4 6 4 5 HDMI Input CLK WAVEFORMS ...
Page 33: ...4 Troubleshooting 4 8 WAVEFORMS 6 Tuner CVBS Out Pattern Grey Bar ...
Page 35: ...4 Troubleshooting 4 10 WAVEFORMS 7 TS DATA Out CLK DATA 0 8 Eagle Out CLK H Sync ...
Page 38: ...4 Troubleshooting 4 13 WAVEFORMS 9 S VIDEO Input Y C ...
Page 40: ...4 Troubleshooting 4 15 WAVEFORMS 10 Component Input Y Pb ...
Page 137: ...10 Operating Instructions and Installation 10 3 10 3 Remote Control ...
Page 144: ...12 PCB Diagram 12 1 12 PCB Diagram 12 1 Main PCB Diagram ...
Page 145: ...12 PCB Diagram 12 2 12 2 Power PCB Diagram 23 ...
Page 146: ...12 PCB Diagram 12 3 12 3 Power PCB Diagram 26 32 ...
Page 147: ...12 PCB Diagram 12 4 12 4 Power PCB Diagram 40 ...
Page 150: ...13 Circuit Descriptions 13 3 13 2 Main Block ...
Page 161: ...14 Reference Infomation 14 7 14 3 2 Supported Modes 1 ...
Page 162: ...14 Reference Infomation 14 8 14 3 3 Supported Modes 2 ...
Page 163: ...14 Reference Infomation 14 9 14 3 4 Supported Modes 3 ...